Climate change and rising sea levels mean the island nation of Kiribati in the South Pacific is at risk of disappearing into the sea.

Sea levels are rising due to climate change. Many coastal cities are at growing risk of flooding. Architects are trying to react to this development with new ideas, such as floating cities. But this concept is not without its problems.

Kiwi birds, New Zealand's national symbol, are unique animals. But they are in danger of becoming extinct. Who is responsible? And what can be done to save them?

The small island of St. Helena in the South Atlantic is home to unique fauna and flora. Many of the more than 400 species living here are found nowhere else in the world. To ensure that it stays that way, the inhabitants are committed to preserving biodiv...